A/c
Senior User
Joined: May 2005
Posts: 432
Likes: 0
From: YORK S.C.
have you put the guages to it to make sure it has enough freon in it,if it is low the pressure switch will not allow the compressor to come on.if freon is ok,the switch could be bad,try bypassing the switch just to see if comp comes on,if it does it could be an electrical problem..i had this problem on a previous truck one time
Posting Guru
Joined: Sep 2004
Posts: 1,915
Likes: 1
From: Yokosuka, Honshu, Japan
I think most conversion kits with the freon can is around $50... but, I was told that you have to change out hoses at the very least. I was also told that you have to purchase all new parts, including compressor. I don't know of any way to flush out / purge any of the remaining R-12 unless you have access to a purge unit. I think that if you get a kit and all new hoses, though, you should be okay.
Senior User
Joined: Aug 2004
Posts: 133
Likes: 0
From: Nanticoke, PA
I didn't replace any parts when I did my conversion to R-134A in my '89 B2. I did have to replace the compressor afterwards due to a clutch problem. I used a compressor from an '87 Ranger. I did all this about 5 or 6 years ago and the system still works great for me.
The reason they say, in most cases, to replace hoses, evaporator, etc., is because there are some vehicles out there that need this done. Older Chrysler products need it done (it figures).
All I needed was to add the high and low port adapters, PAG oil, and then charge the system. The conversion kit at the time was $35. It is probably more now since the cost for R-134A has increased.
The reason they say, in most cases, to replace hoses, evaporator, etc., is because there are some vehicles out there that need this done. Older Chrysler products need it done (it figures).
All I needed was to add the high and low port adapters, PAG oil, and then charge the system. The conversion kit at the time was $35. It is probably more now since the cost for R-134A has increased.
Trending Topics
Posting Guru
Joined: Dec 2002
Posts: 1,283
Likes: 0
From: Racine county, WI
Originally Posted by kernel-panic
I think most conversion kits with the freon can is around $50... but, I was told that you have to change out hoses at the very least. I was also told that you have to purchase all new parts, including compressor. I don't know of any way to flush out / purge any of the remaining R-12 unless you have access to a purge unit. I think that if you get a kit and all new hoses, though, you should be okay.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Senior User
Joined: Aug 2004
Posts: 133
Likes: 0
From: Nanticoke, PA
Originally Posted by OSin86
Like already said you will not need to change anything. Get the system drained down and use a $35 conversion kit to refill it with 134a. Like many other things in autos this has turned out to be not near as a big of a deal as shops would like you to think.
Thread
Thread Starter
Forum
Replies
Last Post
jayvee
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
5
Feb 13, 2001 05:51 PM
